期刊
ENVIRONMENTAL TECHNOLOGY
卷 42, 期 8, 页码 1145-1154出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09593330.2019.1659422
关键词
Periphytic biofilm; functional redundancy; nutrient accumulation; community structure; temperature fluctuation
资金
- National Key R&D Program of China [2018YFD0800500]
- Science and Technology Major Project of Guangxi Province, China [AA17204078]
- National Natural Science Foundation of China [41825021, 31772396]
- National Natural Science Foundation of Jiangsu Province, China [BK20181511]
The study showed that periphytic biofilm can maintain nutrient accumulation capacity under temperature fluctuations by increasing biodiversity, with the adaptation mechanisms of benthic microbial communities helping to sustain this functionality. The findings also emphasize the important role of periphytic biofilm in influencing nutrient cycling in aquatic ecosystems under temperature changes.
Temperature can fluctuate widely between different seasons, and this may greatly impact many biological processes. However, little is known about its influence on the functioning of benthic microbial communities. Here we investigated the nutrient accumulation capability of periphytic biofilm under temperature fluctuations (17-35 degrees C). Periphytic biofilm maintained the same nutrient accumulation capacity after experiencing the 'warming-hot-cooling' temperature fluctuation under both lab and outdoor conditions as those without temperature disturbance. In response to temperature increase, both community composition and species richness changed greatly and the increase in biodiversity was identified as being the underlying mechanism boosting the sustainable function in nutrient accumulation, indicating zero net effects of community changes. These findings provide insights into the underlying mechanisms of how benthic microbial communities adapt to temperature fluctuations to maintain nutrient accumulation capacity and elucidate that periphytic biofilm plays important roles in influencing nutrient cycling in aquatic ecosystems under temperature changes such as seasonal fluctuations.
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